Hello, I Have Been On Simvastatin 10 Mg For Seven

hello, i have been on simvastatin 10 mg for seven months, my cholesterol ldl was up only a wee bit. i am a 60 years old female, 5ft 5in, weighed 150 lbs small frame, now i weigh 130 lb, i was weighed at my dr.'s office four weeks ago and weighed 134 lbs, i went in yesterday and was weighed and had lost another four lbs. i have done nothing different with my eating or exercising, my cholesterol in now in a good range. doctor said he was impressed and to keep up the good work, told him i was not doing anything different, he just smiled and that was that. my health is great in every other way. question is when will the weight loss stop????